TWI546674B - Data transmitting device having multi-transmission modes and method of switching multi-transmission modes thereof - Google Patents

Description

Multi-transmission mode information transmission device and transmission mode switching method thereof

The present invention relates to an information transmission device for a mobile electronic device, and more particularly to an information transmission device of a multi-transmission mode and a transmission mode switching method thereof.

At present, mobile electronic devices, such as smart phones, tablets, etc., have built-in data storage space, so that the mobile electronic devices can store more digital data, such as photos, videos and other digital materials. However, with the technical advancement of various manufacturers, the relative increase in the capacity of photos and videos has also highlighted the problem of insufficient storage space for built-in data of mobile electronic devices.

Some mobile electronic devices are therefore equipped with a card structure for the memory card, so that the data storage space can be expanded. This can solve some of the data storage problems, but the memory card size is getting smaller and smaller, and it is difficult to use and use. Easy to lose and many other issues. Therefore, there are still a large number of users who choose to use the original transmission cable to connect with external computers (such as desktop computers or notebook computers) through the connectors of mobile electronic devices, because the average computer has a larger The data storage space allows the data stored in the mobile electronic device to be read and stored to ensure that the mobile electronic device has a certain data storage space for use. However, the use of the mobile electronic device is still limited.

Therefore, manufacturers of peripheral products for developing mobile electronic devices began to manufacture various transmission lines or data storage devices having storage functions for plugging into the connectors of the mobile electronic devices, and solving the extra configuration of the card structure and the external transmission to the computer for data storage. Inconvenience. As shown in Figure 11, this The transmission line 70 is a wristband structure. The two ends of the wristband body 71 are respectively connected with a first connector 72 and a second connector 73. The first connector 72 and the second connector 73 are separately connected to each other. The connecting seat 74 can be internally provided with a storage device 741. When only the first connector 72 is inserted into the connecting base 74 and connected to the storage device 741, the action of the second connector 73 is connected. The electronic device can access the data storage device 741 through the transmission line 70; otherwise, when only the second connector 73 is inserted into the connection base 74 and connected to the storage device 741, the first connector 72 connected computers can access data with the storage device through the transmission line 70. However, when the connecting base 74 is inserted between the computer and the mobile electronic device, the storage device 741 of the connecting base 74 has no effect and there is still a possibility of loss.

As shown in FIG. 12, it is a transmission line 80 having a data storage space. The transmission line 80 is connected to a first USB connector 82 and a second USB connector 83 at two ends of a body 81, and the body 81 is intermediate A memory module 84 of the plug-in memory card 841 is connected in series, and the memory module 84 is connected to the first and second USB connectors 82 and 83 through the body 81. In use, the first USB connector 82 (micro USB) is connected to the USB connector of a mobile phone 85, and the second USB connector 83 is connected to an external power source 86, so that the memory module 84 is used to backup the USB connector. Mobile phone data or two-way data transmission with the mobile phone 85. However, the transmission line 80 only has a data storage function. If the second USB connector 83 is connected to a computer, the computer cannot perform bidirectional data transmission with the mobile phone 85.

As shown in FIG. 13, a transmission line 90 having a bidirectional data transmission and storage function is also connected to a first USB connector 92 and a second USB connector 93 at the two ends of a body 91, and then stored. The connecting line 941 on the two sides of the device 94 is connected in parallel with the body 91. Since the first and second USB connectors 92 and 93 have the same data transmission protocol, the first and second USB connectors 92 and 93 are respectively inserted. When it is disposed between the computer and the mobile electronic device, the bidirectional data transmission can be directly performed through the body 91, if only the first USB connector 92 is connected to the computer, or only the second USB connector 93 and the mobile electronic device When the device is connected, the computer or the mobile electronic device can access the data of the storage device 94. However, the parallel connection structure of the transmission line 90 is complicated and difficult to manufacture, and the folding is difficult.

In summary, the transmission line with storage function currently used for mobile electronic devices is still not optimal and needs further improvement.

In view of the above technical defects of the transmission line having the storage function, the main object of the present invention is to provide a multi-transmission mode information transmission device and a transmission mode switching method thereof, which can realize the function of providing a multi-transmission mode in a single transmission line structure, and both There are data storage and two-way data transmission.

The main technical means for achieving the above purpose is to enable the information transmission device to include a first transmission interface in a housing, and to support a first data transmission protocol; a second transmission interface and the first transmission The interface is a different standard interface and supports a second data transmission protocol, the second data transmission protocol is compatible with the first data transmission protocol; a transmission mode switching and data storage unit includes a control unit and a switching unit And a storage unit; wherein the switching unit is connected between the first and second transmission interfaces and the control unit; and when the control unit detects the connection state of the first and second transmission interfaces, detecting the first When the connection state of the first and second transmission interfaces is the connected state, controlling the switching unit to switch the first and second transmission interfaces to directly connect to perform the first transmission mode; and detecting that only the connection state of the first transmission interface is Connected state, from main mode to slave mode, and controlling the switching unit to switch the first transmission interface to the control unit, through the control unit The storage unit performs the second transmission mode; detecting that only the connection state of the second transmission interface is the connected state, outputting a master-slave mode switching request to the second transmission interface in the main mode, and then changing from the main mode to the slave mode And controlling the switching unit to switch the second transmission interface to connect with the control unit, and perform a third transmission mode with the storage unit through the control unit.

The information transmission device of the present invention switches the first to third transmission modes according to the detected connection state of the first and second transmission interfaces, and includes the first and second transmission interfaces for direct bidirectional data transmission and the first transmission interface. The data access to the storage unit through the control unit and the data access of the second transmission interface to the storage unit through the control unit are completed by the control unit, and a single transmission line structure can be realized without additional Set up other cables or use an external storage device.

Preferably by the first transmission interface is a USB interface, the second transmission interface is Apple (Apple ^TM) Lightning (Lightning) interface, or an interface with the lightning reversible (flippable) plug-type structure B Lightning interface or C type USB (USB type-C) interface.

The main technical means for achieving the above purposes is to enable the information transmission device to have different transmission interfaces in a casing but have compatible data transmission protocols first and second transmission interfaces and a storage unit. The transmission mode switching method includes: (a) detecting, in the main mode, that the connection state of the first and second transmission interfaces is a connected state, and switching the first and second transmission interfaces to directly connect to perform the first transmission mode. (b) detecting in the main mode that only the connection state of the first transmission interface is the connected state, changing from the main mode to the slave mode, and switching the first transmission interface to be connected to the control unit for performing the second transmission. And (c) detecting in the main mode that only the connection state of the second transmission interface is the connected state, outputting a master-slave mode callback request to the second transmission interface, and then changing from the main mode to the slave mode, and switching The second transmission interface is connected to the control unit to perform a third transmission mode.

The transmission mode switching method of the information transmission device of the present invention determines and switches the first to third transmission modes according to the connection state of the first and second transmission interfaces, where the first transmission mode includes first and second The transmission interface directly transmits data in both directions, and the second transmission mode is the first The transmission medium performs data access to the storage unit, and the third transmission mode is data access of the second transmission medium to the storage unit, so that the information transmission apparatus has a multi-transmission mode.

1, 1a‧‧‧Information transmission device

10, 10a‧‧‧Transmission mode switching and data storage unit

100, 100a‧‧‧ shell

11‧‧‧Control unit

111‧‧‧First serial data interface

112‧‧‧Second serial data interface

12‧‧‧ storage unit

13‧‧‧First switching unit

14‧‧‧Second switching unit

15‧‧‧Power Switching Unit

16‧‧‧Light indicator unit

17‧‧‧ button

20‧‧‧First transmission interface

30‧‧‧Second transmission interface

50‧‧‧Power Module

51‧‧‧Charging unit

52‧‧‧ battery unit

53‧‧‧Power Conversion Unit

531‧‧‧ Current monitoring interface

60‧‧‧Apple device

61‧‧‧ computer

62‧‧‧Power Converter

70‧‧‧ transmission line

71‧‧‧Bracelet body

72‧‧‧First connector

73‧‧‧Second connector

74‧‧‧Connecting seat

741‧‧‧Storage device

80‧‧‧ transmission line

81‧‧‧Ontology

82‧‧‧First USB connector

83‧‧‧Second USB connector

84‧‧‧Memory Module

85‧‧‧Mobile phones

86‧‧‧External power supply

90‧‧‧ transmission line

91‧‧‧Ontology

92‧‧‧First USB connector

93‧‧‧Second USB connector

94‧‧‧Storage

941‧‧‧Connecting line

Figure 1 is a perspective view showing a first preferred embodiment of the information transmission device of the present invention.

Figure 2: is a functional block diagram of Figure 1.

Fig. 3 is a diagram showing a method of switching a transmission mode of the information transmission apparatus of the present invention.

4A to 4C are schematic diagrams showing the connection of the first to third transmission modes and the peripheral devices in sequence.

Figure 5 is a flow chart showing the third transmission mode shown in Figure 4C by the control unit.

Figure 6 is a flow chart showing the third transmission mode shown in Figure 4C.

Figure 7 is a perspective view showing a second preferred embodiment of the information transmission device of the present invention.

FIG. 8A is a schematic diagram showing a connection between the first transmission mode and the peripheral device in sequence.

FIG. 8B is a schematic diagram showing a connection between the second transmission mode and the peripheral device in sequence.

Figure 8C is a connection diagram of Figure 7 connected to an external DC power supply.

FIG. 8D is a schematic diagram of a connection between the third transmission mode and the peripheral device in sequence.

FIG. 8E is a schematic diagram showing another connection of the third transmission mode and the peripheral device in sequence. FIG.

Figure 9 is a functional block diagram of Figure 7.

Figure 10: Another flow chart of the control unit performing the third transmission mode.

Figure 11: Appearance of a looped transmission line.

Figure 12 is a structural diagram of a transmission line having both a storage function.

Figure 13 is a schematic view showing the structure of a transmission line.

The present invention provides an information transmission device for a multi-transmission mode for a mobile electronic device, which not only provides an external storage space of the mobile electronic device, but also provides the use of the mobile electronic device for data access with other electronic devices. DETAILED DESCRIPTION OF THE INVENTION The techniques of the present invention are detailed.

Referring to FIG. 1 and FIG. 2, a first preferred embodiment of the information transmission device 1 of the present invention includes a housing 100, a first transmission interface 20, a second transmission interface 30, and a transmission mode. Switching and data storage unit 10. In this embodiment, the housing 100 does not include a battery or other power source therein, and is a transmission line structure. Therefore, the housing 100 is an electrical insulation covering body of the transmission line, and the first and second transmission interfaces 20, 30 is a connector plug, respectively. Preferably by the first transmission interface 20 is a type A USB (USB type-A) connector, and the second transmission interface 30 for the Apple (Apple ^TM) is reversible (flippable) plug structure comprising A Lightning type A interface, Lightning type B interface, Type C USB (USB type-C) interface or other similar interface, the Type A USB connector and Type A, Type B lightning connectors and The C-type USB interface includes the serial data terminals Data I/O (D+, D-) and the DC voltage terminals DC/IN (V+, GND), DC/OUT (V+, GND), so the interface of the two connectors The standards are different, but with compatible data transfer protocols.

The transmission mode switching and data storage unit 10 includes a control unit 11, a switching unit and a storage unit 12; wherein the control unit 11 controls the switching operation of the switching unit to detect the first and second transmission interfaces. 20, 30 connection state, and connected to the storage unit 12 for two-way communication; in addition, the control unit 11 can also directly connect the first and second transmission interfaces 20, 30 to detect the first and second The connection state of the transmission interfaces 20, 30. The switching unit is connected between the control unit 11 and the first and second transmission interfaces 20 and 30 to switch the data transmission path. The switching unit includes a first switching unit 13 and a second switching unit 14. The first switching unit 13 is connected between the data pin Data I/O of the first transmission interface 20 and a first serial data interface 111 of the control unit 11, and the second switching unit 14 is connected to the Data pin Data I/O of the second transmission interface 30 and The second serial data interface 112 of the control unit 11 is connected to each other, and the first switching unit 13 and the second switching unit 14 are connected to each other. The storage unit 12 can be a flash memory, an SD card, a Micro SD card or the like.

In addition, if the second transmission interface 30 uses the B-type lightning interface, the transmission mode switching and data storage unit 10 further includes a power switching unit 15 for turning on and off an external DC power supply. The power switching unit 15 can be a switching component and is connected in series between the DC voltage terminals DC/IN and DC/OUT of the first and second transmission interfaces 20 and 30, and is switched by the control unit 11 to Closed state.

Referring to FIG. 3, the control unit 11 detects the connection state S1 of the first and second transmission interfaces 20, 30 in the main mode. As shown in FIG. 4A, when the first transmission interface 20 is plugged into a USB socket of a computer 61, and the second transmission interface 30 is connected to a lightning socket or a C-type USB of an Apple device 60 using a B-type lightning interface. The Apple device 60 can be an iPhone, an iPad, an iPod, etc., and the Apple device 60 is preset to a Device Mode; therefore, the control unit 11 detects the first and second transmission interfaces 20 The connection state of 30 is the connected state S10, and the first and second switching units 13 and 14 controlling the switching unit switch the first and second transmission interfaces 20 and 30 to be directly connected, because the computer 61 is preset as the main mode. (Host Mode), and the Apple device 60 is in the Device Mode, so that a first transmission mode M1 can be performed. At this time, the computer 61 displays the Apple device 60 as a removable disk drive. The user is caused to operate the computer 61 to access the Apple device 60 and back up or retrieve the data of the Apple device 60 to the computer 61. In addition, if the first switching unit 13 uses a hub (HUB), the computer 61 further displays the storage unit 12 as another removable disk drive for the user to separately use the apple device 60 and The storage unit 12 performs data access. In addition, since the computer 61 provides a DC power supply, the control unit 11 can control the power switching unit 15 to be turned on, and the DC voltage terminal DC/IN of the first transmission interface 20 is connected to the DC of the second transmission interface 30. The voltage terminal DC/OUT is charged by the computer 61 to the Apple device 60 at the same time.

As shown in FIG. 4B, when only the first transmission interface 20 is plugged into the USB socket of the computer 61, the second transmission interface 30 is not exposed to other mobile electronic devices, and the control unit 11 only detects the first transmission interface. The connection state of the transmission interface 20 is the connected state S20. At this time, the control unit 11 changes from the main mode to the slave mode, and the first switching unit 13 that controls the switching unit switches the first transmission interface 20 and the control unit 11 The first serial data interface 111 is connected. In this way, the computer 61 can perform a data access to the storage unit 12 through the control unit 11 and the storage unit 12 in a second transmission mode M2.

As shown in FIG. 4C, the second transmission interface 30 of the present embodiment uses a B-type lightning interface. When only the second transmission interface 30 is plugged into the lightning socket of the Apple device 60, the first transmission interface 20 is exposed. Not connected to the computer, but connected to an external DC power source (such as the power converter 62), the control unit 11 only detects that the connection state of the second transmission interface 30 is the connected state S30. The apple device 60 can perform a data access to the storage unit 12 through the control unit 11 and the storage unit 12 in a third transmission mode M3. In addition, the control unit 11 can control the power switching unit 15 to be turned on, and the Apple device 60 is charged by the external DC current. At this time, the preset of the control unit 11 is still the main mode, and the Apple device 60 is still preset to the slave mode.

As shown in FIG. 5 and FIG. 6 , the control unit 11 detects that the connection state of the second transmission interface 30 is the connected state. The control unit 11 detects that a USB device is connected in the main mode S31. Go to the second transmission interface 30, and enumerate S32 for the USB device, and then determine whether the USB device is the Apple device S33; if not, return to S31 to maintain the main mode unchanged; if yes, output one before the main mode The master-slave mode is requested to the second transmission interface S34. After receiving the request, the apple device changes from the mode to the main mode, and outputs a support master-slave mode to the replies. After the control unit 11 receives the replies, the S35 is received. The second switching unit 14 that controls the switching unit switches the second transmission interface 30 to be connected to the second serial data interface 112 of the control unit 11; therefore, the apple device 60 is switched from the main mode to the slave mode S36. The third transmission mode M3 can be performed, that is, the storage unit 12 Data access is performed, the data of the Apple device 60 is backed up to the storage unit 12, or the data of the storage unit 12 is captured into the Apple device 60; that is, the user interfaces through the user device of the Apple device 60. (APP), data access is performed on the storage unit 12; at the same time, since the power switching unit 15 is turned on, the Apple device 60 can also perform charging while accessing data.

Since the first, second, and third transmission modes M1, M2, and M3 can store the data in the storage unit 12, the embodiment may further include a signal indicating unit 16 to be connected to the control unit 11, The control unit 11 performs corresponding lamp number control on the lamp number indicating unit 16 according to the current transmission mode, so that the user can know the current transmission mode of the information transmission device according to the lamp number. The light indicating unit 16 can be an LED element.

Referring to FIG. 7, FIG. 8 and FIG. 9, a second preferred embodiment of the information transmission device 1a of the present invention includes a housing 100a, a first transmission interface 20, a second transmission interface 30, and a second transmission interface. The transmission mode switching and data storage unit 10a and a power module 50 are provided. The first and second transmission interfaces 20 and 30 of the present embodiment and the transmission mode switching and data storage unit 10a are substantially the same as the first preferred embodiment, but the transmission mode switching and data storage unit 10a of the embodiment further includes There is a button 17 which is connected to the control unit 11. The power supply module 50 is further included in the outer casing 100a of the embodiment. Therefore, the information transmission device 1a of the embodiment can be a mobile power supply device. The power switching unit 15 is connected in series to the DC voltage terminals DC/IN and DC/OUT of the first and second transmission interfaces 20 and 30, and is also connected in series to the power module 50 and the second transmission interface 30. The DC voltage terminal is connected between DC/OUT, and the power module 50 is further connected to the DC voltage terminal DC/IN of the first transmission interface 20; therefore, the control unit 11 can control the power switching unit 15 to switch the first The DC voltage terminal DC/OUT of the second transmission interface 30 is connected to the DC voltage terminal DC/IN of the first transmission interface 20 or to the power module 50.

The power module 50 includes a charging unit 51, a battery unit 52, and a power conversion unit 53. The charging unit 51 is connected to the DC voltage terminal of the first transmission interface 20. DC/IN, and the battery unit 52 is a lithium battery or other similar battery, and is connected in series between the charging unit 51 and the power conversion unit 53. The power conversion unit 53 can be a boost converter circuit and connected to the DC voltage terminal DC/OUT of the second transmission interface 30 through the power switching unit 15 and has a current monitoring interface 531 for connecting to the control unit. 11. The control unit 11 outputs a different request to the current monitoring interface 531 to determine the output current of the boost converter circuit, and the current power of the battery unit 52 can also be obtained from the current monitoring interface 531.

The light indicating unit 16 is connected to the control unit 11. The control unit 11 reads the current power level of the battery unit 52 from the current monitoring interface 531 according to the state of the button 17, and then controls the battery according to the power level. The light indicating unit 16 displays the corresponding light number for the user to judge whether the current battery unit 52 is sufficient according to the light number. When an external DC power source (power converter) is connected to the first transmission interface 20, the external DC power source supplies a charging current to the battery unit 52 through the charging unit 51 for charging.

Please refer to FIG. 8A, when the first transmission interface 20 is plugged into a USB socket of a computer 61, and the second transmission interface 30 is connected to the lightning socket or C of an Apple device 60 using a B-type lightning interface. The USB device is in a preset mode (Device Mode); therefore, the control unit 11 detects that the connection state of the first and second transmission interfaces 20, 30 is the connected state S10. And controlling the first and second switching units 13, 14 of the switching unit to switch the first and second transmission interfaces 20, 30 to be directly connected. At this time, the computer 61 is preset to the host mode, and the apple device 60 is in the slave mode, and the first transmission mode M1 can be performed, and the user operates the computer 61 to access the data of the apple device 60. . In addition, since the computer 61 provides a DC power supply, a charging current can be supplied to the battery unit 52 for charging through the charging unit 51, and the power switching unit 15 is controlled by the control unit 11 to switch the second transmission interface 30. The DC voltage terminal DC/OUT is connected to the DC voltage terminal DC/IN of the first transmission interface 20, and the Apple device 60 is simultaneously charged by the computer 61. In addition, the user can also select the charging of the apple device 60 by the power module 50 through the button 17.

As shown in FIG. 8B, when only the first transmission interface 20 is plugged into the USB socket of the computer 61, the second transmission interface 30 is not exposed to other mobile electronic devices, and the control unit 11 only detects the first transmission interface. The connection state of the transmission interface 20 is the connected state. At this time, the control unit 11 changes from the main mode to the slave mode, and the first switching unit 13 that controls the switching unit switches the first transmission interface 20 and the control unit 11 The first serial data interface 111 is connected. In this way, the computer 61 can perform a data access to the storage unit through the control unit 11 and the storage unit 12 in a second transmission mode M2. In addition, since the computer 61 provides a DC power supply, a charging current can be supplied to the battery unit 52 for charging through the charging unit 51.

As shown in FIG. 8C, when only the first transmission interface 20 is plugged into an external DC power source (such as the power converter 62), the second transmission interface 30 is not exposed to other mobile electronic devices, and the control unit 11 is only The DC voltage terminal DC/IN potential of the first transmission interface 20 is detected to be changed. At this time, the control unit 11 controls the lamp number indicating unit 16 to display the charging lamp number, that is, the power converter 62 is being provided through the charging unit 51. A charging current is supplied to the battery unit 52 for charging.

As shown in FIG. 8D, when the second transmission interface 30 uses a B-type lightning interface, and only the second transmission interface 30 is plugged into the lightning socket of the Apple device 60, the first transmission interface 20 is not exposed to the computer. In a state where the battery unit 52 of the power module 50 still has a power, the control unit 11 only detects that the connection state of the second transmission interface 30 is the connected state. The control unit 11 can control the power switching unit 15 to switch the DC voltage terminal DC/OUT of the second transmission interface 30 to the power conversion unit 53 of the power module 50, and the power module 50 simultaneously The Apple device 60 is charged. At this time, the preset of the control unit 11 is still the main mode, and the Apple device 60 is still preset to the slave mode. When the third transmission mode M3 is executed, the power module 50 is provided in the embodiment. Therefore, the control unit 11 of the present embodiment further knows the type of the Apple device 60 in step S33, and controls the power conversion unit 53 to output the corresponding current Apple device through the current monitoring interface 531. The charging current required for the type of 60, as shown in FIG. 10, the control unit 11 outputs a master in the main mode. The mode switching request S35 is sent to the second transmission interface S34, and after receiving the support master-slave mode pair response S35 from the Apple device 60, the mode is changed from the master mode to the slave mode S36, so that the apple device 60 can be the storage unit. 12 access to data. At this time, the control unit 11 further determines that the type S38 of the Apple device 60 is S37 such as iPhone, iPod or iPAD. Since different device types have different charging current sizes, such as 1A, 2.1A, and 2.4A, the control is performed. The unit 11 controls the power conversion unit 53 to output a corresponding charging current S38 according to the type of judgment. Therefore, in the third transmission mode M3, the Apple device can simultaneously perform data access to the storage unit 12, and can simultaneously charge.

As shown in FIG. 8E, when the second transmission interface 30 uses a B-type lightning interface, and only the second transmission interface 30 is plugged into the lightning socket of the Apple device 60, the first transmission interface 20 can be combined with an external DC. The power supply (such as the power converter 62) is connected, so that the control unit 11 only detects that the connection state of the second transmission interface 30 is the connected state, and the DC voltage terminal DC/IN potential of the first transmission interface 20 changes. The flow of the third transmission mode as shown in FIG. In addition, the control unit 11 can also control the power switching unit 15 to switch the DC voltage terminal DC/OUT of the second transmission interface 30 to the DC voltage terminal DC/IN of the first transmission interface 20, and the external DC Current charges the Apple device 60.

In summary, the information transmission device includes a first, second, and third transmission modes, wherein the first to third transmission mode switching methods of the information transmission device include: (a) detecting the primary mode The connection state of the first and second transmission interfaces is a connected state, and the first and second transmission interfaces are directly connected to perform a first transmission mode; and (b) detecting, in the main mode, only the first transmission interface The connection state is the connected state, the master mode is changed to the slave mode, and the first transmission interface is switched to be connected to the control unit to perform the second transmission mode; and (c) the master mode is configured to detect only the second transmission. The connection state of the interface is the connected state, outputting a master-slave mode to the second transmission interface, and then changing from the main mode to the slave mode, and switching the second transmission interface to the control unit to perform the third transmission mode.

Therefore, the first or second transmission interface of the information transmission device of the present invention has the function of direct bidirectional transmission, and the first or second transmission interface can provide a computer or a mobile electronic device without external storage device (especially Apple can use the reversible The mobile electronic device of the plug-in interface) has an external data storage space; further, the information transmission device of the present invention has a power module built therein, and the data is accessed in the third transmission mode, and the second transmission interface is simultaneously The connected device is charged; in addition, the charging current can be adjusted according to different device types connected to the second transmission interface.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the present invention. The present invention has been disclosed by the embodiments, but is not intended to limit the invention, and any one of ordinary skill in the art, In the scope of the technical solutions of the present invention, equivalent modifications may be made to the equivalents of the embodiments of the present invention without departing from the technical scope of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments are still within the scope of the technical solutions of the present invention.

Claims (19)

A multi-transmission mode information transmission device includes a first transmission interface supporting a first data transmission protocol and a second transmission interface having a different standard interface with the first transmission interface. And supporting a second data transfer protocol, the second data transfer protocol being compatible with the first data transfer protocol; a transfer mode switching and data storage unit comprising a control unit, a switching unit and a storage unit; The switching unit is connected between the first and second transmission interfaces and the control unit; and when the control unit detects the connection state of the first and second transmission interfaces, detecting the first and second transmissions When the connection state of the interface is the connected state, the switching unit is controlled to switch the first and second transmission interfaces to directly connect to perform the first transmission mode; and detect that only the connection state of the first transmission interface is the connected state, The main mode is changed to the slave mode, and the switching unit is controlled to switch the first transmission interface to the control unit, and the control unit performs the a transmission mode; detecting that only the connection state of the second transmission interface is a connected state, outputting a master-slave mode switching request to the second transmission interface in the main mode, and then changing from the main mode to the slave mode, and controlling the switching Unit switching The second transmission interface is connected to the control unit, and the third transmission mode is performed with the storage unit through the control unit. The information transmission device of claim 1, wherein the first and second transmission interfaces respectively comprise a serial data terminal and a DC voltage terminal. The information transmission device of claim 2, wherein the second transmission interface is a flip-type A-type lightning interface, a B-type lightning interface or a C-type USB interface, and the control unit is in the third transmission mode. After the connection state of the second transmission interface is the connected state, the master-slave mode swap request is outputted after further determining an Apple device connected to the second transmission interface. The information transmission device of claim 3, wherein the transmission mode switching and data storage unit further comprises a power switching unit connected in series between the DC voltage terminals of the first and second transmission interfaces. The information transmission device of claim 4, wherein the control unit switches the power switching unit to be turned on in the first and third transmission modes. The information transmission device according to any one of claims 2 to 5, wherein the switching unit comprises: a first switching unit connected to the serial data pin of the first transmission interface and one of the control unit Between the first serial data interface; and a second switching unit connected between the serial data pin of the second transmission interface and a second serial data interface of the control unit, and the first switching The unit and the second switching unit are interconnected. The information transmission device of claim 6, wherein the first switching unit is a hub. The information transmission device of claim 6, wherein the transmission mode switching and data storage unit further comprises a light indicating unit connected to the control unit, wherein the control unit controls the light indicating unit Light number. The information transmission device of claim 4, wherein the housing further houses a power module, wherein the power module is serially connected to the DC voltage terminal of the first transmission interface and the power switching unit. The information transmission device of claim 9, wherein the power module comprises: a charging unit connected to the DC voltage terminal of the first transmission interface; and a battery unit connected to the charging unit to obtain a charging current; and a power conversion unit connected between the battery unit and the voltage terminal of the second transmission interface, and having a current monitoring interface, the current monitoring interface is connected to the control unit, and the control unit is connected to the control unit The output request is sent to the current monitoring interface to determine the output current, and the current power of the battery unit can also be obtained from the current monitoring interface. The information transmission device of claim 10, wherein: in the first transmission mode, the control unit controls the power switching unit to switch the DC voltage terminal of the second transmission interface to the first transmission interface DC voltage terminal; In the third transmission mode, the control unit controls the power switching unit to switch the DC voltage terminal of the second transmission interface to the power conversion unit of the power module. The information transmission device of claim 10 or 11, wherein the control unit further detects that the potential of the DC voltage terminal of the first transmission interface changes in the third transmission mode, the control unit controls the power switching unit to switch the A DC voltage terminal of the second transmission interface is coupled to the DC voltage terminal of the first transmission interface. The information transmission device of claim 10 or 11, wherein the control unit controls the current monitoring interface of the power conversion circuit to adjust a DC voltage terminal outputted to the second transmission interface in the third transmission mode The charging current. The information transmission device of claim 10 or 11, wherein the transmission mode switching and data storage unit further comprises: a light indicating unit connected to the control unit, wherein the light of the light indicating unit is controlled by the control unit And a button that is connected to the control unit. A transmission mode switching method for an information transmission device, wherein the information transmission device is provided with a different transmission interface in a casing but has a compatible data transmission protocol first and second transmission interface and a storage unit; wherein the transmission mode is switched The method includes: (a) detecting, in the main mode, that the connection state of the first and second transmission interfaces is a connected state, and switching the first and second transmission interfaces to directly connect to perform the first transmission mode; (b) In the main mode, detecting that only the connection state of the first transmission interface is the connected state, changing from the main mode to the slave mode, and switching the first transmission interface to be connected to the control unit to perform the second transmission mode; (c) detecting in the main mode that only the connection state of the second transmission interface is the connected state, outputting a master-slave mode switching request to the second transmission interface, and then changing from the main mode to the slave mode, and switching the second The transmission interface is connected to the control unit to perform a third transmission mode. The transmission mode switching method according to claim 15, wherein the second transmission interface is a flip-type A-type lightning interface, a B-type lightning interface or a C-type USB interface, and the second transmission is detected in step (c). After the connection state of the interface is the connected state, the master-slave mode swap request is output only after further determining an Apple device connected to the second transmission interface. The transmission mode switching method of claim 16, wherein: in the step (a), a charging current is further supplied from the first transmission interface to the second transmission interface; and the first step is further detected in the step (c) When the transmission interface is connected to an external DC power source, a charging current is supplied from the first transmission interface to the second transmission interface. The transmission mode switching method of claim 16, wherein the information transmission device has a power module serially connected between the first and second transmission interfaces, wherein: step (a) is further from the first The transmission interface provides a charging current to the power module and the second transmission interface; the step (b) further provides a charging current from the first transmission interface to the power module; and the step (c) further detects the first Whether an external DC power source is connected to the transmission interface: (c1) if not, a charging current is supplied from the power module to the second transmission interface; (c2) if provided, a charging current is supplied from the first transmission interface to the power source Module and the second transmission interface. The transmission mode switching method of claim 18, wherein the step (c2) adjusts a charging current output by the power module to the second transmission interface according to a type of the Apple device connected to the second transmission interface.